[en] This paper proposes a novel tracking state estimator to process both fast-rate synchronized phasor and slow rate SCADA measurements. The former are assumed to be in limited number. The latter are exploited as and when they arrive to the control center. In order to restore observability, after each execution of the tracking state estimator, forecasted SCADA measurements are used as pseudo-measurements in the next estimation. An event detection analysis allows assessing if the system is in quasi steady-state. If so, an innovation analysis is performed to identify and eliminate erroneous SCADA measurements. The system state is computed by Hachtel’s augmented matrix method. The option of exploiting time-tagged SCADA measurements is also considered. The method is illustrated through detailed dynamic simulations of a test system evolving towards voltage collapse, with and without emergency control.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Alcaide-Moreno, Boris
Fuerte-Esquivel, Claudio
Glavic, Mevludin ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Smart grids
Van Cutsem, Thierry ; Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Language :
English
Title :
Electric Power Network State Tracking from Multirate Measurements
Publication date :
January 2018
Journal title :
IEEE Transactions on Instrumentation and Measurement
ISSN :
0018-9456
eISSN :
1557-9662
Publisher :
IEEE Instrumentation and Measurement Society, New York, United States - New York
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